Father Michael Duffy talks about how he came to give the homily at the funeral of his friend, Father Mychal Judge, the first official victim of the September 11, 2001 attacks on the World Trade Center.

Jack Murray (R) went down to Ground Zero the day of the September 11 attacks. He tells his friend, Jud Esty-Kendall (L), about cutting steel so rescue workers could search for those buried in the rubble.

Antonia Landgraf and Matthew Gambale remember their sister, Giovanna "Gennie" Gambale, who died on September 11, 2001. Gennie worked at Cantor Fitzgerald on the 105th floor of Tower One. She was 27 at the time, and living near her parents' home in Brooklyn.